Australian Strains of Botryococcus braunii Examined for Potential Hydrocarbon and Carotenoid Pigment Production and the Effect of Brackish Water
| Autor: | Lesley Clementson, Ian Jameson, Andrew T. Revill, Susan I. Blackburn, Kim Jye Lee-Chang, Elisabeth Albinsson |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Control and Optimization Biodiversity Botryococcus Energy Engineering and Power Technology lcsh:Technology 01 natural sciences Botryococcus braunii Pigment hydrocarbon pigment Botany Temperate climate Electrical and Electronic Engineering Engineering (miscellaneous) Carotenoid chemistry.chemical_classification biology Brackish water lcsh:T Renewable Energy Sustainability and the Environment 010604 marine biology & hydrobiology biofuel biology.organism_classification Salinity chemistry visual_art visual_art.visual_art_medium 010606 plant biology & botany Energy (miscellaneous) |
| Zdroj: | Energies; Volume 13; Issue 24; Pages: 6644 Energies, Vol 13, Iss 6644, p 6644 (2020) |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en13246644 |
| Popis: | The green alga Botryococcus braunii produces abundant hydrocarbons, in the form of drop-in biodiesel, which promoted interest in the species as a renewable fuel. However, despite the observation of dense populations in the wild, Botryococcus grows very slowly in culture, severely limiting its potential for development as a bioresource. Undertaking a biodiscovery program, we found new strains of Botryococcus in locations ranging from tropical to temperate Australia and from both fresh and brackish waters. As part of the ecophysiological characterisation of this new biodiversity, lipid and pigment compositions were studied for six new strains from six different locations. The strains were inoculated in either freshwater or brackish (salinity of 4)-based medium and maintained over 150 days. The growth of cultures was studied continuously, while lipid and pigment composition were analysed at final harvest on day 150. No significant differences in growth rate between fresh and brackish media were observed. Some strains were more tolerable of brackish conditions than others with a link between salinity tolerance and original location. The use of lower salinity (4 ppt) had a minimal effect on lipid composition, with only two of the six strains showing a different hydrocarbon profile in comparison to the other strains; pigment composition showed only minor variations for fresh and brackish water cultures, although the concentrations varied significantly with the freshwater cultures containing higher pigment concentrations. |
| Databáze: | OpenAIRE |
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